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The energy of an excited hydrogen atom i...

The energy of an excited hydrogen atom is -3.4eV. The principal quantum number of the orbit is

A

1

B

2

C

3

D

4

Text Solution

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The correct Answer is:
B
`-3.4 = (-13.6)/(n^2) therefore n^2 = 4 therefore n=2`
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MARVEL PUBLICATION-ATOMS, MOLECULES AND NUCLEI -TEST YOUR GRASP
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